Soil test report, what is the main detection of soil test

The fees charged by third-party soil testing agencies are not fixed and can be affected by a variety of factors. For example, different testing items, different testing difficulties, the complexity of the required technology, and the number of samples required will all affect the charging standard of the institution.

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In general, soil testing.

The fees of third-party institutions mainly include the following parts:

1.Cost of testing items: Different testing items will carry out different laboratory tests and analyses on the soil, and the equipment and labor costs required will also be different, so there will be different charging standards.

Generally, the agency will set the fee based on the complexity of the project and the difficulty of the technology required.

2.Sample quantity fee: If the customer needs to test a large number of soil samples, then the agency will charge a certain percentage of the fee according to the number of samples. This part of the cost is also part of the cost of the institution, so the higher the number of samples, the lower the average cost of a single sample.

3.Other additional costs: In addition to the above two main costs, there may be some other additional costs charged by the soil testing third-party organization, such as sample transportation fees, report production fees, etc. These fees are also charged by the agency in order to cover its operating costs.

Soil test report: the soil shall be in accordance with the provisions of the "Quality and Safety of Agricultural Products and Pollution-free Vegetable Producing Environment"; Vegetables according to GB2763 regulations, if there is an index in the inspection project beyond the standard provisions, the product is judged to be unqualified.

Evaluation criteria and basis, the evaluation of the current status of agricultural environmental quality is compared with the environmental requirements of the production area of pollution-free agricultural products, and the statistical analysis is carried out in combination with the environmental survey data and testing data of the production area. Based on the "Guidelines for Environmental Assessment of Pollution-free Food Producing Areas" (NY T5295-2004) and "Environmental Monitoring and Quality Evaluation of Pollution-free Agricultural Products" (DB T534-2003).

Soil testing items are divided into soil fertility index testing, soil pollutant testing, and soil other index testing.

Soil fertility index detection: organic matter, total nitrogen, total phosphorus, total potassium, nitrate nitrogen, ammonium nitrogen, available phosphorus, available potassium, slow-acting potassium, medium elements (calcium, magnesium, sulfur, silicon), trace elements (copper, iron, manganese, zinc, boron, molybdenum), etc.;

Soil pollutant detection: heavy metals (lead, arsenic, cadmium, chromium, mercury, nickel, cobalt, vanadium, thallium, antimony, beryllium), pesticide residues and other organic pollutants (organochlorine pesticides, organophosphorus pesticides, carbamate pesticides, polycyclic aromatic hydrocarbons, phenolic compounds, nitrobenzene compounds, aniline compounds, phthalic acid, etc.), etc.);

Detection of other soil indicators: pH, chloride ions, phosphates, water-soluble salts, cation exchange capacity, fluoride, etc.

The 45 soil test items include:

Heavy metals (7 items).: Arsenic, cadmium, chromium (hexavalent), copper, lead, mercury, nickel.

Volatile organic compounds (27 items).: Carbon tetrachloride, chloroform (chloroform), chloromethane, 1,1-dichloroethane, 1,2-diethane, 1,1-dichloroethylene, cis-1,2-dichloroethylene, trans-1,2-dichloroethylene, dichloromethane, 1,2-dichloropropane, 1,1,1,2-tetrachloroethane, 1,1,2,2-tetrachloroethane, tetrachloroethylene, 1,1,1-trichloroethane, 1,1,2-trichloroethylene, trichloroethylene, 1,2,3-trichloropropane, vinyl chloride, benzene, chlorobenzene, 1,2- Dichlorobenzene, 1,4-dichlorobenzene, ethylbenzene, styrene, toluene, m-xylene + paraxylene, o-xylene.

Semi-volatile organic compounds (11 items).: nitrobenzene, aniline, 2-chlorophenol, benzo[a]anthracene, benzo[a]pyrene, [b]fluoranthene, benzo[k]fluoranthene, dibenzo[a,h]anthracene, indeno[1,2,3-cd]pyrene, naphthalene.

Soil testing depends on 45 items to see what testing items are done, such as heavy metal testing in soil, common lead, cadmium, mercury, arsenic, etc., Zhongke Testing can do it.

According to the "Soil Environmental Quality and Construction Land Soil Pollution Risk Control Standard (Trial)" (GB36600-2018), 45 routine soil testing items include:

Arsenic, cadmium, chromium, copper, lead, mercury, nickel, carbon tetrachloride, chloroform, chloromethane, 1,1-dioxane, 1,2-dioxane, 1,1-dioxyethylene, cis-1,2-dioxyethylene, trans-1,2-dioxyethylene, dioxane, 1,2-dioxane, 1,1,1,2-tetrachloroethane, 1,1,2,2-tetrachloroethylene, tetrachloroethylene, 1,1,1-trichloroethane, 1,1,2-trichloroethane, trichloroethylene, 1,2,3-trichloropropane, vinyl chloride, benzene, chlorobenzene, 1,2-dichlorobenzene, 1,4-dichlorobenzene, ethylbenzene, styrene, toluene, m-xylene + paraxylene, o-xylene, nitrobenzene, aniline, 2-chlorophenol, benzo[ ]anthracene, benzo[ ]pyrene, benzo[ ] fluoranthene, benzo[k]fluoranthene, dibenzo[, h]anthracene, indeno[1,2,3-cd]pyrene, naphthalene.

Soil testing can be entrusted to a third-party testing agency.

Legal Analysis:1Determine the sowing crops, whether they are vegetables or fruit tree vegetables, and field crops are generally taken to a depth of 20cm; The fruit tree is 40 cm in size and can be sampled in two layers.

2.To determine the sown area, if the fertility of the whole field is almost the same, you can take a sample every 50 mu; Otherwise, it is necessary to take samples for different fertility levels of land and test them separately.

3.Sampling Tool Selection Standard Sampling tool is a soil extractor, if not, it can be replaced with a flat-head shovel.

4.The sampling method is generally selected by the five-point sampling method or the S-type sampling method.

5.Sampling point sampling method: When using the soil extractor, it should be perpendicular to the ground and take it to the standard depth;

6.Take standard soil samples, mix the soil samples at each point of the sample, pick up stones, crop residues, etc., and use the four-point method to take standard soil samples.

Divide the evenly mixed soil sample into four, leave the diagonal soil sample, go to other soil samples, and then remix the remaining soil samples evenly, repeat the above steps, until the weight of the soil sample is about 1 kg, that is, the standard soil sample.

7.Place the standard soil sample in a cool and ventilated place to dry, and pay attention not to sun exposure.

8.Put the dried standard soil sample into the sampling bag and mark the time, place, sampler and other information'

Legal basis: Article 58 of the Agricultural Law of the People's Republic of China Farmers and agricultural production and operation organizations shall maintain cultivated land, rationally use chemical fertilizers, pesticides and agricultural films, increase the use of organic fertilizers, adopt advanced technology, protect and improve soil fertility, and prevent the pollution, destruction and decline of agricultural land.

The people's agricultural administrative departments at or above the county level shall take measures to support farmers and agricultural production and operation organizations to strengthen the construction of cultivated land quality, and regularly monitor the quality of cultivated land.

Summary. Soil monitoring report refers to the regular monitoring of the soil environment to understand the changes in the soil environment and the changes in the pollutants in the soil, so as to take effective treatment measures in time. Soil monitoring reports usually include the detection results of soil pollutants, changes in the soil environment, and the degree of contamination of soil pollutants.

The test report refers to the detection of pollutants in the soil to understand the type, content, and distribution of pollutants in the soil, so as to take effective treatment measures. The test report usually includes the test results of the contaminant, the type, content, and distribution of the contaminant.

Soil monitoring report refers to the regular monitoring of the soil environment to understand the changes in the soil environment and the changes in the pollutants in the soil, so as to take effective treatment measures in a timely manner. Soil monitoring reports usually include the detection results of soil pollutants, changes in the soil environment, and the degree of contamination of soil pollutants. The test report refers to the detection of pollutants in the soil to understand the type, content and distribution of pollutants in the soil and soil, so as to take effective treatment measures.

The test report usually includes the test results of the contaminant, the type, content, and distribution of the contaminant.

Can you add, I don't quite understand it.

The soil monitoring report refers to the monitoring of pollutants in the soil to determine the degree of soil contamination and give corresponding management recommendations. The test report refers to the detection of pollutants in the soil to determine the degree of soil branch pollution and give corresponding treatment measures. The cause of the problem may be soil pollution, which may be due to industrial pollution, agricultural activities, municipal sewage treatment, etc.

The solution can be to take measures such as pollution source control, pollutant treatment, and soil remediation to reduce soil pollution. Personal tip: We should strengthen the monitoring and detection of soil pollution, detect problems in time, and take effective treatment measures to reduce soil pollution.

In addition, it is necessary to strengthen the awareness of preventing and controlling soil pollution to reduce the occurrence of soil pollution.

Experiment ReportExperimental Name: Determination of Soil Organic Matter ContentPurpose of the experiment: To understand the soil quality and fertility by measuring the organic matter content in the soil, and to provide a reference for soil improvement and crop cultivation.

Experimental principle: Soil organic matter is formed by the accumulation of organic substances such as plant and animal remains, excrements, secretions and microbial remains. Organic matter has an important impact on soil fertility and structure, so the determination of soil organic matter content is one of the important indicators to evaluate soil quality.

The most commonly used method for determining soil organic matter content is the oxidation assay, the most commonly used of which is the alkaline permanganate method. The principle of the method is to react the soil sample with the alkaline permanganate solution, and determine the permanganate consumption before and after the reaction through the redox reaction of permanganate in an acidic environment, so as to calculate the content of soil organic matter. Protocol Procedure:

1.Prepare soil samples: Collect samples from the soil to be assayed and remove impurities and large particles.

2.Mix samples: Mix the soil samples evenly to obtain a representative sample of the wax mill.

3.Preparation of reagents: Prepare a certain concentration of alkaline permanganate solution and calibrate.

4.Reaction determination: A certain quality of soil sample is reacted with permanganate solution, and the reaction is stopped after the reaction time is controlled.

5.Color determination: Use a spectrophotometer or other suitable instrument to determine the absorbance of the reaction solution.

6.Calculate the organic matter content: The amount of organic matter in the soil is calculated based on the relationship between the consumption of potassium permanganate and the standard curve.

Experimental results: The measured absorbance value was substituted into the standard curve, and the content of organic matter in the soil sample was calculated. Results are expressed as percentages or grams of kilograms (g kg).

Experimental Notes: 7Make sure to avoid contamination when sampling, and use clean tools and containers.

8.During the measurement process, pay attention to the accuracy of the operation and the correct use of the instrument. 9.

Caution is required in the handling of permanganate solutions and acids, and safe operating procedures are strictly followed during use. 10.Instrument calibration and quality control are carried out before and after laboratory operation to ensure the accuracy of measurement results.

Conclusion: The content of organic matter in soil can be determined by this experiment, and important information about soil quality and fertility can be obtained. Based on the results of the experiments, planning and decision-making for soil improvement and crop cultivation can be carried out.

At the same time, it is necessary to pay attention to the accuracy and safety of the operation during the experiment.

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Soil testing experiments are usually carried out in specialized soil testing institutions or laboratories. These institutions usually have advanced equipment and professional technicians, who can conduct a comprehensive analysis and testing of the soil, including soil texture, fertility, pH, organic matter content, trace element content and other indicators. If you need to have a soil test, you can choose to consult with your local environmental protection department, agriculture department or relevant research institute.

They will refer you to a trusted soil testing agency so that you can get accurate test results. At the same time, you also need to prepare soil samples and follow the guidance of the agency for sampling and sample processing to ensure the accuracy of the test results. I hope I can help you, <>

Do you have any other questions?